CVE-2026-87760Web Vitals Tracking <= 5.4.2 - Unauthenticated Stored XSS via Tracking Beacon Metric Name
Updated under an hour ago ()
Does this affect you?
It affects Unknown Web Vitals Tracking. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.34%, higher than 26% of scored CVEs.
Do this next
Free account, 1 product
The Web Vitals Tracking WordPress plugin through 5.4.2 does not validate or escape performance measurements submitted by unauthenticated visitors before storing them and outputting them in a script context on an administrative page, allowing unauthenticated attackers to perform Stored Cross-Site Scripting attacks against administrators.
- CVSS
- 8.8 HIGH (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-79
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.34% (percentile 26)
- Assigned by
- WPScan
- NVD analysis
- Deferred
- Record last updated
- Oct 11, 2026
- First seen by InfoSec Signals
- Oct 11, 2026
Affected products
Unknown Web Vitals Tracking unknown:web_vitals_tracking (from the name) | through 5.4.2 | CNA record |
References
- https://wpscan.com/vulnerability/c6250c43-42c5-4c76-9eb9-2b35ba461e8c/exploit, vdb-entry, technical-description
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.